From the rhizomes of Dioscorea tokoro Makino, collected from Chekiang and Kiangsu, were isolated and identified diosgenin, yamogenin and tokorogenin.

• 从浙江、江苏两地所产的山萆(艹?)(Dioscorea tokoro Makino)根茎中；分?e提出薯蓣配基；yamogenin以及tokorogenin.